Brine-tolerant lubricants and methods for using the same
AssigneeMETSS Corp.
InventorsAdriane Lewis, Courtney Stankavich, Michelle L. Docter, Matthew Nilsen, Kenneth J. Heater
Life of this patent
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Abstract
Brine-tolerant lubricants are provided. The brine-tolerant lubricants may comprise an oil component, a surfactant component, and, optionally, an additive component. In one aspect, the oil component comprises a fatty acid alkyl ester. In one aspect, the surfactant component comprises at least one of an alkoxylated fatty acid and an alkoxylated fatty alcohol. Also provided are methods for increasing the lubricity of a drilling fluid by contacting the drilling fluid with the brine-tolerant lubricants.
Claims20
A brine-tolerant lubricant, comprising:
- (A) 92-96% of an oil component consisting essentially of soy fatty acid methyl ester, coconut fatty acid methyl ester, or a combination thereof;
- and
- (B) 2-8% of a surfactant component consisting essentially of 24-3 ethoxylated linear alcohol, ethoxylated soy fatty acid, or a combination thereof;
- and,
- (C) up to 6% of an additive component consisting essentially of cocamide diethanolamine, sulfurized vegetable fatty acid methyl ester, or a combination thereof.
A method for increasing the lubricity of a drilling fluid, comprising contacting the drilling fluid with a brine-tolerant lubricant, the brine-tolerant lubricant comprising:
- (A) 92-96% of an oil component consisting essentially of soy fatty acid methyl ester, coconut fatty acid methyl ester, or a combination thereof;
- and (B) 2-8% of a surfactant component consisting essentially of 24-3 ethoxylated linear alcohol, ethoxylated soy fatty acid, or a combination thereof;
- and, optionally, (C) up to 6% of an additive component consisting essentially of cocamide diethanolamine, sulfurized vegetable fatty acid methyl ester, or a combination thereof.
Dependencies are inferred from the claim text.